First, your DEF options this week are pretty bad in general. Obviously, so of them will score decently, but none really stand out. The NYG DEF scares me a little because PHI can score (whether they've done a lot of it yet or not). Also, they were impressive last week against CAR, but in the first two weeks, 24 to DAL and 34 to TB, with little-to-no turnovers. I think they are more like weeks 1 and 2, than they are like week 3. For that reason, I'd play DAL this week. They are an underrated DEF and they seem to play lower scoring games in general than NYG. They have allowed the least amount of yards through the first 3 weeks, and the least amount of passing yards as well. Cutler is just as turnover prone as Vick...
The other league you a fine either way. Arizona has looked great on DEF and MIA is missing Bush, and that's why I'd play them. However, I expect the Ravens to do well also (coming from a Browns fan).
Here's mine: viewtopic.php?t=522880